Problem by lorejade: Why do some yogurts contain vitamin D, and some do not?
Involved in acquiring much more D from foodstuff sources, other than calcium tablets. Some listing Vitamin D, 25%, on the cup, and other individuals do not. Yoplait Greek lists D, however Oikos and Chobani do not checklist it.

Finest answer:

Response by Amy B.
Some are vitamin D fortified for better absorption of calcium.

What do you assume? Solution beneath!